otherwise made provision to protect the interests of Lessor in a manner reasonably satisfactory to Lessor) other than Liens for Taxes either not yet due or being contested in good faith by appropriate proceedings so long as such proceedings do not involve any risk of the sale, forfeiture or loss of the Aircraft, Airframe, any Engine or part or any interest therein; (R) if such contest shall be conducted in a manner requiring the payment of the claim, Lessee shall have advanced sufficient funds, on an interest-free basis, to make the payment required, and agreed to indemnify the Indemnitee against any additional net after-tax cost to such Indemnitee of such advance; (S) in the case of any tax being contested in the name of an Indemnitee, such Indemnitee shall have received an opinion of independent tax counsel selected by Lessee and approved by such Indemnitee (which approval shall not be unreasonably withheld) and furnished at Lessee's sole expense to the effect that there is